In order to determine if all three lncRNA HOTAIR, ncHoxA1, and ncHoxD4 co-express with EZH2, and to help determine the roles of both the lncRNA and Polycomb protein in breast carcinoma, EZH2 protein immunohistochemical staining was performed on the breast carcinoma microarrays. Here, EZH2 is linked to breast carcinoma.